[PATCH 1/2] block/nvme: Properly display doorbell stride length in trace event

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Commit 15b2260bef3 ("block/nvme: Trace controller capabilities")
misunderstood the doorbell stride value from the datasheet, use
the correct one. The 'doorbell_scale' variable used few lines
later is correct.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 block/nvme.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/nvme.c b/block/nvme.c
index 5a6fbacf4a5..80c4318d8fc 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -745,7 +745,7 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace,
     trace_nvme_controller_capability("Contiguous Queues Required",
                                      NVME_CAP_CQR(cap));
     trace_nvme_controller_capability("Doorbell Stride",
-                                     2 << (2 + NVME_CAP_DSTRD(cap)));
+                                     1 << (2 + NVME_CAP_DSTRD(cap)));
     trace_nvme_controller_capability("Subsystem Reset Supported",
                                      NVME_CAP_NSSRS(cap));
     trace_nvme_controller_capability("Memory Page Size Minimum",
-- 
2.26.2